Re: Coherent CWDM 40G QSFP

2016-10-19 Thread Rod Beck
True 40 gigs is rare period. Most of the time it is bandwidth limiting on a 100 
gig wave.



From: NANOG  on behalf of Mike Hammett 

Sent: Wednesday, October 19, 2016 11:46 PM
To: Tim Durack
Cc: nanog list
Subject: Re: Coherent CWDM 40G QSFP

Apparently I just remembered the big transport platforms using coherent 40G and 
100G and assumed there was a cheap variant, but there isn't.




-
Mike Hammett
Intelligent Computing Solutions

Midwest Internet Exchange

The Brothers WISP

- Original Message -

From: "Tim Durack" 
To: "Mike Hammett" , "nanog list" 
Sent: Tuesday, October 18, 2016 9:28:02 PM
Subject: Re: Coherent CWDM 40G QSFP

Not aware of ACO/DCO in QSFP form factor. Inphi is doing 100G QSFP28 PAM4 DWDM 
for MS. Probably the best you will see for a while.


On Tue, Oct 18, 2016 at 4:50 PM Mike Hammett < na...@ics-il.net > wrote:


Does anyone make a coherent CWDM 40G QSFP? I thought so, but the first couple 
places I checked, I struck out at. This would be for a passive mux\MROADM.




-
Mike Hammett
Intelligent Computing Solutions

Midwest Internet Exchange

The Brothers WISP






Re: Coherent CWDM 40G QSFP

2016-10-19 Thread Mike Hammett
Apparently I just remembered the big transport platforms using coherent 40G and 
100G and assumed there was a cheap variant, but there isn't. 




- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 

- Original Message -

From: "Tim Durack"  
To: "Mike Hammett" , "nanog list"  
Sent: Tuesday, October 18, 2016 9:28:02 PM 
Subject: Re: Coherent CWDM 40G QSFP 

Not aware of ACO/DCO in QSFP form factor. Inphi is doing 100G QSFP28 PAM4 DWDM 
for MS. Probably the best you will see for a while. 


On Tue, Oct 18, 2016 at 4:50 PM Mike Hammett < na...@ics-il.net > wrote: 


Does anyone make a coherent CWDM 40G QSFP? I thought so, but the first couple 
places I checked, I struck out at. This would be for a passive mux\MROADM. 




- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 






Re: Coherent CWDM 40G QSFP

2016-10-18 Thread Tim Durack
Not aware of ACO/DCO in QSFP form factor. Inphi is doing 100G QSFP28 PAM4
DWDM for MS. Probably the best you will see for a while.
On Tue, Oct 18, 2016 at 4:50 PM Mike Hammett  wrote:

> Does anyone make a coherent CWDM 40G QSFP? I thought so, but the first
> couple places I checked, I struck out at. This would be for a passive
> mux\MROADM.
>
>
>
>
> -
> Mike Hammett
> Intelligent Computing Solutions
>
> Midwest Internet Exchange
>
> The Brothers WISP
>
>